This Day On The Street
Continue to site
This account is pending registration confirmation. Please click on the link within the confirmation email previously sent you to complete registration.
Need a new registration confirmation email? Click here

Interim Phase II Data Of Merck's Investigational MK-5172 In Combination Therapy In Chronic Hepatitis C Virus Genotype 1 Infection To Be Presented At The American Association For The Study Of Liver Diseases (AASLD) Annual Meeting

Merck (NYSE: MRK), known as MSD outside of the United States and Canada, announced interim results from a Phase II, multi-center, randomized, dose-ranging study (n=332) assessing the safety and antiviral activity of MK-5172, an investigational, once-daily, oral NS3/4A protease inhibitor for the treatment of chronic hepatitis C virus (HCV) genotype 1 infection in combination therapy in treatment-naïve patients. These data will be presented this week at the American Association for the Study of Liver Diseases Annual Meeting (AASLD).

The primary efficacy endpoint of the study was to evaluate the complete early viral response (cEVR) of four regimens of MK-5172 in combination with peginterferon alfa-2b and ribavirin (PR) compared to the control arm in which patients received a 4-week lead-in of PR followed by the addition of VICTRELIS ® (boceprevir) 200 mg Capsules. cEVR was assessed by the proportion of patients who achieved undetectable virus (HCV RNA) at treatment week (TW) 12 in the investigational arms and at TW 16 in the control arm. The MK-5172 regimens had rates of cEVR ranging from 82.8 to 93 percent, versus the control of 74.2 percent.

In the initial cohort, termed the "Vanguard Cohort," (n=136), 96 percent of patients (25/26) who received a regimen containing 100 mg QD of MK-5172 with PR achieved sustained virologic response (SVR) 12, defined as having undetectable virus (HCV RNA) 12 weeks after treatment ended, compared to 54 percent of patients (13/24) in the control arm.

“We are excited by these interim results evaluating MK-5172 in combination therapy,” said Eliav Barr, M.D., vice president, Infectious Diseases, Project Leadership and Management, Merck Research Laboratories. “Our commitment to chronic hepatitis C remains steadfast. We look forward to continuing our studies of MK-5172, including in interferon-free regimens."

Currently planned studies evaluating interferon-free regimens with MK-5172 will be dosed at 100 mg QD.

1 of 8

Check Out Our Best Services for Investors

Action Alerts PLUS

Portfolio Manager Jim Cramer and Director of Research Jack Mohr reveal their investment tactics while giving advanced notice before every trade.

Product Features:
  • $2.5+ million portfolio
  • Large-cap and dividend focus
  • Intraday trade alerts from Cramer
Quant Ratings

Access the tool that DOMINATES the Russell 2000 and the S&P 500.

Product Features:
  • Buy, hold, or sell recommendations for over 4,300 stocks
  • Unlimited research reports on your favorite stocks
  • A custom stock screener
Stocks Under $10

David Peltier uncovers low dollar stocks with serious upside potential that are flying under Wall Street's radar.

Product Features:
  • Model portfolio
  • Stocks trading below $10
  • Intraday trade alerts
14-Days Free
Only $9.95
14-Days Free
Dividend Stock Advisor

David Peltier identifies the best of breed dividend stocks that will pay a reliable AND significant income stream.

Product Features:
  • Diversified model portfolio of dividend stocks
  • Updates with exact steps to take - BUY, HOLD, SELL
Trifecta Stocks

Every recommendation goes through 3 layers of intense scrutiny—quantitative, fundamental and technical analysis—to maximize profit potential and minimize risk.

Product Features:
  • Model Portfolio
  • Intra Day Trade alerts
  • Access to Quant Ratings
Real Money

More than 30 investing pros with skin in the game give you actionable insight and investment ideas.

Product Features:
  • Access to Jim Cramer's daily blog
  • Intraday commentary and news
  • Real-time trading forums
Only $49.95
14-Days Free
14-Days Free


Chart of I:DJI
DOW 17,813.39 +1.20 0.01%
S&P 500 2,088.87 -0.27 -0.01%
NASDAQ 5,116.1430 +13.3350 0.26%

Free Reports

Top Rated Stocks Top Rated Funds Top Rated ETFs